Description Usage Arguments Details Value Author(s) See Also Examples

Add one or more nodes to a graph.

1 |

`node` |
A character vector of node names. |

`object` |
A |

`edges` |
A named list of edges. |

The supplied `node`

s are added to the set of nodes of the
`object`

.

If `edges`

are provided then their must be the
same number as there are `node`

s and the must be in the same
order. The elements of the `edges`

list are vectors. They can be
character vectors of node labels for nodes in `object`

and if so
then they are added with unit weights. If the vector is numeric then
it must be named (with labels corresponding to nodes in the
`object`

) and the values are taken to be the edge weights.

When the `object`

is a `distGraph`

then the `edges`

must
be supplied and they must contain appropriate distances for all nodes
both those in `object`

and those supplied.

A new graph of the same class as `object`

with the supplied node
added to the set of nodes.

R. Gentleman

`removeNode`

, `removeEdge`

,
`addEdge`

1 2 3 4 5 6 7 8 9 10 11 | ```
V <- LETTERS[1:4]
edL1 <- vector("list", length=4)
names(edL1) <- V
for(i in 1:4)
edL1[[i]] <- list(edges=c(2,1,4,3)[i], weights=sqrt(i))
gR <- graphNEL(nodes=V, edgeL=edL1)
gX <- addNode("X", gR)
set.seed(123)
g1 <- randomGraph(letters[1:10], 1:4, p=.3)
g2 <- addNode("z", g1, edges=list(c("a", "h", "g")))
``` |

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